If you walk into any local convenience store, you’ll find a rack of sunglasses labeled “100% Polarized” at surprisingly low prices. Premium Costa Del Mar sunglasses look like a serious investment by comparison.
So, if both types of sunglasses block glare, why is there such a massive price-performance gap? Does it all come down to the Costa Del Mar brand name, or is there actual science backing these sunglasses up?
The short answer is that there is a real difference that may impact your experience. While standard polarized sunglasses block horizontal glare, they often distort colors and fade over time. Costa Del Mar sunglasses combine marine-grade frame durability with proprietary 580 spectral filtering technology to completely transform how you see the outdoor world.
It’s up to you to decide whether the advanced technology in Costa Del Mar sunglasses is worth the investment over standard polarized glasses.
Usually, light waves from the sun disperse and bounce off surfaces at many different angles. When the sun hits a flat surface, such as water, sand, or even your car dashboard, the light waves reflect into a concentrated horizontal beam. That horizontal light wave creates a blinding glare.
Polarized sunglasses are designed to filter out horizontal light waves and eliminate glare. The lenses in polarized glasses use a vertical chemical film grid to filter out this light.
Basic polarized sunglasses stop the glare but often darken your entire field of view uniformly.
When everything appears darker, you’ll have less visibility. The darkness from the sunglasses also muddies natural color contrast and can cause mild depth-perception issues—especially on overcast days or in changing light.
If you’ve ever gone from driving on a sunny day wearing your polarized glasses to entering a dark tunnel and feeling blinded, that’s one of the drawbacks of these glasses.
Costa Del Mar sunglasses are more advanced polarized glasses that utilize proprietary Costa 580 lens technology. This technology filters out yellow light at exactly 580 nanometers, as well as high-energy blue light.
By cutting out the muddy yellow light, the lens dynamically sharpens reds, blues, and greens. For a prescription wearer, the effect is unbelievable color separation. Professional anglers and marine guides rely on prescription Costa sunglasses as “fish-spotting and structure-reading” fixtures.
With Costa, you also have several premium lens choices. The 580G option is lightweight, scratch-resistant glass, while the 580P option is high-impact, durable polycarbonate. Choose the version that best suits the kinds of activities you’ll be doing while wearing these polarized glasses. If you’re looking for polarized sunglasses for fishing, consider premium lens coatings like C-Wall advanced scratch coating and encapsulated mirror finishes that prevent salt and grime from ruining the lens.
Costa frames are built specifically for an active lifestyle on the water. There’s a specialized rubber compound on nose pads and temple tips that actually increases its grip and gets tackier the more a wearer sweats. With this rubber, you won’t have to worry about your glasses slipping off your face, even on hot days in direct sunlight.
Pro Costa sunglass models include engineered ventilation ports and temple channels to actively reduce fogging and heat buildup inside the frame.
One of the drawbacks of readily available cheaper polarized glasses is that you can’t use them as prescription lenses, too. With Costa, you don’t have to choose between corrected vision and high performance.
All Costa frames you buy off the shelf—including Pro models, lifestyle frames, and the eco-friendly Untangled Collection—can be fitted with a prescription. At RX-Safety, we take Costa’s leading frames and offer two ways to get your tailored vision from our U.S.-based optical lab:
Authentic Costa-Branded Rx Lenses: We preserve the original 580G/580P lens materials, coatings, and factory logos while custom surfacing the lenses to your prescription.
In-House Digital Rx Lenses: We craft lenses that provide more affordable pricing, distinctive lens designs, and custom tint options while maintaining strict polarization standards and exceptional clarity.
RX-Safety offers full range availability, including:
Different glasses are better suited to different situations.
If you need sun protection quickly or want a backup pair to keep in the glove box, standard polarized sunglasses from a local store can be a convenient option.
But if you’re spending extended hours on the water, driving, or working outdoors, opt for Costa Del Mar. That’s when the true color contrast, zero eye fatigue, and secure frame grip offered by Costa glasses will make the difference between a successful day and a missed catch or accident.
Standard polarized sunglasses block the sun, but Costa Del Mar glasses reveal the world beneath the glare. Upgrade your outdoor performance and experience true spectral clarity.
Ready to see what you’ve been missing on the water? Explore RX-Safety’s fully customizable collection of prescription Costa Del Mar sunglasses today. Protect your purchase with our lens warranty, and enjoy free shipping and free returns on your next pair!
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